homemade bio filter

I was thinking about getting a clear plastic tube about 1 1/2" in dia. cutting a few holes in the bottom to run airlines through. If I add another airline and stone, then fill the tube up with crushed coral. Will it be just a waste of time, or will this act a a place where beneficial bacteria to grow?

 

probably gunna be a waste of time. if you have sufficient rock and substrate you will get the same effect with zero effort.

 

im putting in the plastic tube to wrangle the air hose tubes anyway just wandering

 

Why?

 

Extra biological filtration on top of live rock seems like a thing of the past in reef keeping.

 

Thanks for the responses. does anyone know a better way to run airlines so that they are less visible?

 

What are you trying to do?

 

hide'em in the corners